/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundLiteralNode.h
Executable DataTypes require a copy of the output to operate on whereas non-executable types do not. Avoid copy by assigning to reference for non-executable types.
namespace Metasound { Metasound::TExecutableLiteralOperator ( const [FOperatorSettings](API\Plugins\MetasoundGraphCore\FOperatorSettings) & InSettings, const [FLiteral](API\Plugins\MetasoundGraphCore\FLiteral) & InLiteral ) }